Let the hive mind of Engadget get that for you.
"I finally got a new laptop with a lone USB 3.0 port. I'm now looking at getting a USB 3.0 hub with a power adapter so I can use both of my USB 3.0 hard drives at faster speeds. I've read lots of horror stories where some hubs either don't come with power adapters -- and as a consequence the portable drives don't work with them properly -- or they are designed poorly which results in USB 2.0 speeds. Or, the hard drives keep getting disconnected. Do your readers have any suggestions or experience using USB 3.0 hubs? Thanks!"
In the mid 70s my uncle who had a notoriously bad time waking up wired a fire alarm bell so that he could plug it in to a timer which in turn was plugged into the wall.
The noise that thing would make is probably traveling out of the solar system at this moment-- vacuum or not.